Skull crusher



July 21, 1953 L. TE Basco 2,646,225

SKULL CRUSHER Filed Oct. 29, 1951 2 Sheets-Sheet 1 l y @i JNVENToR.

IN V EN TOR.

L. TE DESCO SKULL CRUSHER July 21, 1953 Filed Oct. 29, 1951 PatentedJuly 21, r`1953- n UNITED-@STATES PATENT OFFICE y I .2.646,225 'y IsifrULLv CRUSHER l Lawrence TeDesco, .Frank,1a. v ff Applicationoetobegvza, lssnseriai 1510.253344 This invention relates tonew-anduseful irn-V provements in impact crushing devices such: asutilize a weight that is swung by or dropped from 'a boo-m, sometimesreferred toin the trade as skullfcrushersf'and lit is among the objectsthereof to provide for the use of a multiple of weights whicharevsuccessively dropped upon an object to be crushed tol thereby-increasethe capacityk .by lowering the overall time of Work accomplished by suchapparatus'. K.

The invention will become more apparent from a consideration of theVaccompanying drawings, constituting a part hereof, in which likereference characters ldesignate rlike* parts, and in which:

Fig. 1 is a side elevational view of a skull a-lclaims. -(ol. :Mil-27a)2 l by the chain 9, the 'drums will revolve by virtueA Vof their Agearltooth engagement with the pulling the weight I3 so that the latter movesat `a faster rate thanthe conveyor" 9. The racks v Y I'I terminate shortof the sprocket vwheel I 8 at the top of the boom, land the weights I3would tend vtorevolve the drums VIIjin theY direction v'to release'thevweights beforethey were delivthe opening at the top of the boom, it willtravel crusher embodying the principles of this inventio-n;

Fig. 2 a top plan view of a combination boom and conveyor mechanism;Fig. 3 a side elevational view, partially in section, of the boom ofFig. 2 taken along the lines A 3 3 ofFig. 2; and Y Fig-4 a transversesection ofthe boom taken along the line 4 4 of Fig. 3. I

With reference to Fig. 1 of the drawings, the structure thereinillustrated comprises a conventional tractor-type truck I for renderingthe unit mobile, having a cab 2 Ymounted for swivel movement on a turret3 of the tractor I. @Onno-ne end of the cab 2 is mounted a boom 4 which1s pivoted at 5 and supported by a cable 6 connected to the boom 1,which cable passes overa pulley 8 to a winding drum in the cab 2, whichis not shown 'and constitutesV no part of this invention. l n Y Mountedin the boom 4 is an endless conveyor 9 which carries the shafts I0 ofdrums II to which is secured a cable I2, a loose end of which isattached to a weight I3 that is designed to Strike an object I4 to crushthe same. The conveyor 9 is driven by a motor or engine I5 in the cab bya conventional drive connection and, as shown by the dot and dashcircular lines, the

weights pass through an opening at the botn manner shown in Fig. '1.

in the path illustrated Aby the dot and dash Y lines until it falls bygravity, causing the cable I2 yto unwind in the direction where thepulley is free of the pawl I9. The weight I3 drops on the object to becrushed and is thendragged forward toward the rear .of' the boom in theAs the drum II on the conveyor chain 9 passes to the point of toothengagement with the rack I'I, the cable` I 2 will immediately wind onthe drum II until the weight I3 is drawn to the top of the boom.

The structure is given stability by the use of ties 20, Fig. 2, and isof course not subjected to any great stress or loads other than thewinding, lifting and transportation of the Weights from the bottomopening to the top opening of the'boom.

By means of the abo-ve describedV mechanism, a number of crushingweights, there being three shown for illustration only, may be utilizedto greatly decrease the time ordinarily involved in the crushing oflobjects by means of dropping weights. It is evident from the foregoingdescription of the invention that skull crushing devices made in'accordancetherewith may be of simple construction and of Asimpleoperation.

Although one embodiment of the invention has been herein illustrated anddescribed, it will be evident to those skilled in the art that variousmodifications may be made in the details of construction withoutdeparting from the principles herein set forth.

I claim: v

1. In a skull Crusher, a boom comprising a plurality of side members, anendless conveyor chain mounted between said members, drums mounted forrotation on said conveyor chain, gear racks disposed below the upperstrand of said conveyor chain in the path of movement of said chains andgear teeth on said drums interacting with the teeth of said rack wherebythe drums revolve while being conveyed by the chains from one end to theother end of the boom, spring biased paWls for engaging the teeth of thedrums to prevent rotation thereof in one direction, cables connected tosaid drums having Crusher weights at one end thereof, and means fordriving the conveyor chain whereby the Crusher weights are lifted fromthe ground by rotation' of the drums and conveyed along the boom to thetop thereof to fall by gravity on the article to be crushed.

2. In a skull Crusher, a boom having a plurality of endless conveyorchains mounted for rotation intermediate the ends thereof, drive v'meansfor said chains, a plurality of cable drums mounted between the chainsto be conveyed thereby, gear racks disposed below the upper strand andin the path of movement of the chains, gear teeth on the drums forengaging the gear racks to be rotated while travelingwith the conveyorchain fromone end of the boom to theother, spring biased pawls forengaging the teeth of the drums to` prevent rotationV thereof in onedirection, cables connected to said drums having Crusher weightsat oneend thereof, and means for locking said cable drums againstv rotation inone direction after they have passed out of engagement with the teeth ofthe racks comprising a spring ratchet pawl for engaging the teeth of thedrums.

3. In a skull Crusher for manipulating a plurality of crusher weights, aboom mounted for swivel movement on a support, a plurality of endlessconveyor chains mounted in said boom, a gear rack disposed below theupper strand of said conveyor chain, cable drums journaled between thelinks of said chains having a tooth flange interacting with the teeth ofthe gear rack to revolverthe drums whiie passing from one end of theboom to the other, spring'biasedrpawls for engaging the teeth of thedrums to prevent rotation thereof in'one direction, Cables secured tothe drums having crusher weights connected at g the opposite end thereofand drive means for said chain, the boom having open spaces for thecrusher weights at the respective ends thereof whereby the weights arelifted and drawn from below the boom to the upper strand of the conveyorchain while being wound on the conveyor drums as they travel to theopening at the upper end of the boom to vbe released for crushingaction,` said conveyor chains having cross members for supporting theCrusher weights while being conveyed thereon.

' LAWRENCE TE DESCO.

References Cited in the le of this patent UNITED 'STATES PATENTS NumberName Date 465,153 Bloomer Dec. 15, 1891 1,246,821 Carozza Sept. 25,1.917

